#include<stdio.h>
//int main(){
  //  char arr1[] = {'a','b','c'};,只有字符串的结尾会自动添加\0
    //char arr2[] ={"abc"};
   // printf("%s\n", arr1);
   // printf("%s\n", arr2);
   // return 0;
//}


//int main()
//{
  //  printf("abcndf");
    //return 0;
//}


int main (){
    printf("abc\ndf");
    return 0;
}